we、our、us的区别是什么？

we和our的区别是词性和用法不同。

we是人称代词主格形式，our是形容词词性；而且we一般在句子中作主语，如Weshallneverforgetthebeautyofthatlake.我们永远不会忘怀那个湖上的美景。

our后面一般会跟物或事，用作对物品或食物的所属限定。如Ourworldisbutasmallpartofthecosmos.我们的世界仅仅是宇宙的一小部分而已。

e英语单词，代词、名词，作代词时意为“我们、笔者、本人”，作名词时意为“人名、(缅)韦”；而且our英语单词，作为代词时，意为“我们的”。一站式出国留学攻略 http://www.offercoming.com

1 us:[ us ] we的宾格

our:[ 'au? ] pron.我们的

2 被动语态：宾语+is/are/was/were+动词的过去分词+by +主语

3 If:

1.(表示条件)如果 ,主句用将来时,if从句用现在时表示将来

He will come if you invite him.

如果你请他,他会来的.

2.(表示虚拟)假如,要是

1）时态：可以表示过去,现在和将来的情况.它的基本特点是时态退后.

a.同现在事实相反的假设.

句型 ：条件从句 主句

一般过去时 should( would) +动词原形

If they were here,they would help you.

b.表示于过去事实相反的假设.

句型：条件从句 主句

过去完成时 should(would) have+ 过去分词

If she had worked harder,she would have succeeded.

The rice would not have been burnt if you had been more careful.

If my lawyer had been here last Saturday,he would have prevented me from going.

If he had come yesterday,I should / would have told him about it.

含义：He did not come yesterday,so I did not tell him about it.

If he had not been ill and missed many classes,he would have made greater progress.

含义：He was ill and missed many lessons,so he did not make greater progress.

c.表示对将来的假想

句型：条件从句 主句

一般过去时 should+ 动词原形

were+ 不定式 would + 动词原形

should+ 动词原形

If you succeeded,everything would be all right.

If you should succeed,everything would be all right.

If you were to succeed,everything would be all right.

是否 = whether 连接宾语从句

I wonder if she is ill.

不知她是否病了.